#include<iostream>
#include<cstdio>

using namespace std; 
const int N=1010;
int w[N][N],s[N][N];
int n,m,q;

int main()
{
	scanf("%d %d %d",&n,&m,&q);
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=m;j++)
		{
			scanf("%d",&w[i][j]);
			s[i][j]=s[i-1][j]+s[i][j-1]-s[i-1][j-1]+w[i][j];
		}
	}
	while(q--)
	{
		int x1,y1,x2,y2;
		scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
		printf("%d\n",s[x2][y2]-s[x2][y1-1]-s[x1-1][y2]+s[x1-1][y1-1]);
	}
	return 0;
}
